// Copyright 2018 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef V8_DEBUG_DEBUG_PROPERTY_ITERATOR_H_
#define V8_DEBUG_DEBUG_PROPERTY_ITERATOR_H_

#include "src/debug/debug-interface.h"
#include "src/handles.h"
#include "src/isolate.h"
#include "src/prototype.h"

#include "include/v8.h"

namespace v8 {
namespace internal {

    class JSReceiver;

    class DebugPropertyIterator final : public debug::PropertyIterator {
    public:
        DebugPropertyIterator(Isolate* isolate, Handle<JSReceiver> receiver);
        ~DebugPropertyIterator() override = default;

        bool Done() const override;
        void Advance() override;

        v8::Local<v8::Name> name() const override;
        bool is_native_accessor() override;
        bool has_native_getter() override;
        bool has_native_setter() override;
        v8::Maybe<v8::PropertyAttribute> attributes() override;
        v8::Maybe<v8::debug::PropertyDescriptor> descriptor() override;

        bool is_own() override;
        bool is_array_index() override;

    private:
        void FillKeysForCurrentPrototypeAndStage();
        bool should_move_to_next_stage() const;
        void CalculateNativeAccessorFlags();
        Handle<Name> raw_name() const;

        Isolate* isolate_;
        PrototypeIterator prototype_iterator_;
        enum Stage { kExoticIndices = 0,
            kEnumerableStrings = 1,
            kAllProperties = 2 };
        Stage stage_ = kExoticIndices;

        uint32_t current_key_index_ = 0;
        Handle<FixedArray> keys_;
        uint32_t exotic_length_ = 0;

        bool calculated_native_accessor_flags_ = false;
        int native_accessor_flags_ = 0;
        bool is_own_ = true;

        DISALLOW_COPY_AND_ASSIGN(DebugPropertyIterator);
    };
} // namespace internal
} // namespace v8

#endif // V8_DEBUG_DEBUG_PROPERTY_ITERATOR_H_
